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-rw-r--r--target-arm/helper.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c
index 53527c2003..f5d6e68186 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -3531,6 +3531,8 @@ static int bad_mode_switch(CPUARMState *env, int mode)
case ARM_CPU_MODE_IRQ:
case ARM_CPU_MODE_FIQ:
return 0;
+ case ARM_CPU_MODE_MON:
+ return !arm_is_secure(env);
default:
return 1;
}